Improvement in radiators



W. P. CUNNINGHAM. L

Radiator.

No1-199,799. lmnml 13.1.29',1878.

N. PETERS, FHoTo-Lnnoemmen. wAsmnaToN. o. c.

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' A l-MPRovEM'N-.IN RAlimi-onsl i Specification forming .part of LettersPatent No. 199,799, dated January 29, 1878; application "lcd December24, 1877.

- communicating side openings or passages at the opposite ends of thesections, and connected by a series of pipes or tubes, each alternateone of which is out of line or plane with the tubes on opposite sides ofit in the same section, and each alternate one of which is preferablyformed with an oifset at its connection with the end boxes or chambersof its section, so that the alternate tubes of each section enterbetween the tubes of the adjacent section, substantially as hereinafterdescribed, whereby compactness in the structure is combined with anenlarged heating-surface, and an advantageous circulation of the airpassing up between the sections and about the tubes is obtained.

Figure 1 represents an' outside face or side view of a radiator-sectionconstructed in accordance with my invention; Fig. 2, alongitudinal'vertical section thereof on the line a' w,- and Eig. 3, ahorizontal section on the irregular line y y in Fig. 4, which representsa transverse section of two radiator-sections united with each other.

The radiator is composed of a series of sections, A, arranged inparallel relation with each other, and united at their opposite ends bybolts c, passing through iianges or ears f on said sections. Eachradiator-section is composed, in part, of opposite end boxes or chambersB B, having side ports or passages b b, which establish communicationbetween the sections on reverse sides of each section at opposite endsthereof, for the purpose of keeping up a steam-circulation backward andforward through the several sections alternately. Thus the port b at oneend of each sectionvis on the reverse side of said section to that onwhich the other port b .at the opposite end of such section isarrange-d, and these ports communicate with corresponding ports in thetwo sections, respectively, lying on either side of said section. Theflanges or ears f at the ends of either section should be on the sidesof the end boxes or chambers B B which have the ports b b in them. Thetwo end boxes or chambers B B of each section are connected by anynumber of tubes, C C', arranged in relation with each otherso that eachintermediate tube O is out of line or plane with the tubes C immediatelyabove and below or on opposite sides of it in the same section, but allof said tubes serving to pass the steam from one end boxB tothe oppositeend box B of the section. This arrangement of the connecting-tubesbetween the end boxes operates to give the air to be heated a tortuousand prolonged travel between the sections and about the tubes thereof.

To secure a more perfect effect in this reranged to face the roundedside of a similarlyconstructed intermediate tube in the adjacentsections whereby the air passing up between the several tubes is causedto impinge on the attened sides d of the intermediate tubes, anddeiiected by said sides, and caused to impinge on and circulate aboutthe other tubes. Great compactness also is obtained in tting thesections together, without impairing the circulation of the air betweenthe tubes or reducing the i capacity of the latter, but rather giving anextended heating area of the tubes.

Each radiator-section A may readily be detached for repair or renewalwhen required.

Each alternate tube C', whether made with flattened sides or otherwise,is formed with an offset at itsconnection with the end boxes or chambersB B of its section, so that the alternate tubes of each section enterbetween the tubes of the adjacent section, as shown in Fig. 4, thusmaterially adding to the compactness of the radiator for a given amountof tubular heating-surface.

alternate one is out of line or plane with the f tubes on opposite sidesof it in the same radiator-section, and constructed alternately withattened sides d, in combination with the end boxes or chambers B B,having communicating ports or passages b b between the sections of theradiator, on reverse sides of each section, at opposite ends thereof,essentially as described.`

W. F. CUNNINGHAM.

Witnesses:

AFRED. HAYNEs,

VERNON H. HARRIS.

